Ms-802 7333048048790 equals: n a - 2,4 Ghz usb receiver 500 Hz 800 1200 1600 2000 2400 Dpi Reach up to 10m Ergonomic form Tpe rubberized hand grip Switch switch 6 Buttons with scroll wheel Compatible with windows 7 or newer, us 10.8 Or newer past, the laws chrome us Driven of 1 aa battery included not Brand: DELTACO